Concept explainers
a.
To find: The
a.
Answer to Problem 6CRE
The probability is 0.3707.
Explanation of Solution
Given:
The probability that WAIS score of selected individuals is 105 or abovecan be calculated as:
Thus, the probability is 0.3707.
b.
To find: The mean and standard deviation of the sampling distribution
b.
Answer to Problem 6CRE
The required mean and standard deviation are 100 and 1.937 respectively.
Explanation of Solution
The mean and standard deviation can be calculated as:
The required mean and standard deviation are 100 and 1.937 respectively.
c.
To find: The probability that average WAIS score is above 105 or more.
c.
Answer to Problem 6CRE
The probability is 0.0049.
Explanation of Solution
The probability that average WAIS score is above 105 or morecan be calculated as:
Thus, the probability is 0.0049.
d.
To explain: Whether the answer of above parts will be affected if the distribution of WAIS score is said non normal.
d.
Explanation of Solution
The answer of (a) would be affected if the distribution is said non-normal.
On the other hand, the answers of b and c would not be affected because the sample size is above 30.
Chapter 7 Solutions
The Practice of Statistics for AP - 4th Edition
Additional Math Textbook Solutions
Introductory Statistics
Elementary Statistics: Picturing the World (7th Edition)
Intro Stats, Books a la Carte Edition (5th Edition)
Elementary Statistics (13th Edition)
Statistics: The Art and Science of Learning from Data (4th Edition)
Elementary Statistics: Picturing the World (6th Edition)
- MATLAB: An Introduction with ApplicationsStatisticsISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncProbability and Statistics for Engineering and th...StatisticsISBN:9781305251809Author:Jay L. DevorePublisher:Cengage LearningStatistics for The Behavioral Sciences (MindTap C...StatisticsISBN:9781305504912Author:Frederick J Gravetter, Larry B. WallnauPublisher:Cengage Learning
- Elementary Statistics: Picturing the World (7th E...StatisticsISBN:9780134683416Author:Ron Larson, Betsy FarberPublisher:PEARSONThe Basic Practice of StatisticsStatisticsISBN:9781319042578Author:David S. Moore, William I. Notz, Michael A. FlignerPublisher:W. H. FreemanIntroduction to the Practice of StatisticsStatisticsISBN:9781319013387Author:David S. Moore, George P. McCabe, Bruce A. CraigPublisher:W. H. Freeman